NXP (founded by Philips) 80C31X2

• CA51 Compiler Kit
  Keil
• PK51 Professional Developer's Kit
  Keil

• REG51.H
  1,689 bytes

• 8051 /INT0 External Interrupt Example Program
• 8051 Bit I/O Example Program
• 8051 Counter 0 Example Program
• 8051 Memory Write Example Program
• 8051 Port I/O Example Program
• 8051 Pulse Width Measurement Example
• 8051 Timer 0 Mode 1 Example Program
• 8051 Timer 1 Mode 2 Example Program
• Interrupt-Driven Serial I/O Support for printf
• ISR-Driven Serial I/O V2

• MCBx51
  Keil
• BRUTE52P
  Micromint, Inc.

• Ultra-51
  Ashling
• MX51, AX51
  Hitex
• iC1000 PowerEmulator
  iSystem
• MetaICE-XF 8051 In-Circuit Emulator
  Metalink Corporation
• ADM-51
  Signum Systems

• WinBurn
  Microware Technology

• RTX51
  Keil
• RTX51 Tiny
  Keil

The following on-chip peripherals are simulated by the Keil Software µVision Debugger.

• Interrupts 6S/4L (Including External)
• Port 0
• Port 1
• Port 2
• Port 3
• Power save modes (Idle & Power down)
• Serial UART (Enhanced Interface)
• Timer 0
• Timer 1
• Timer 2 (Extended Timer 2)
• X2 mode for CPU with Clock Control

The following AGSI Drivers are available for the Keil Software µVision Simulator.

• Proteus VSM
  Labcenter Electronics
• 8051 State Machine
  MEBA
• I²C Simulation
  MEBA
• LCD Simulation (HD44780 Controller)
  MEBA
• LED simulation
  MEBA
• Signal Generator
  MEBA

The following AGDI Drivers are available for the Keil Software µVision Debugger.

• Keil ISD51 Driver
  Keil
• Keil MON51/FlashMON Driver
  Keil